Wire-insulator.



No. 842,942. PATBNTED FEB. 5, 1907.

- W. G. CLARK.

WIRE INSULAT OR.

APPLICATION FILED JAN.29,'1906.

WITNESSES: JNVENTOR.

A TTORNE Y.

PATENT OFFICE.

WALTER e; CLARK, OF NEW YORK, N. ,Y.

WlRE-INSULATOFI.

:No. 842,942. Specification of Application filed January 29 To aZZ whomit may concern.-

Be it known that I, WA TER G; GLARK, of the city, county, and State ofNew York, have invented a new and useful Improvement inVVire-Insulators, ofwhich the following is a full, clear, and exactdescription.

' My invention relates to improvements in insulators such as are usedfor supporting and insulating electric'wires I The invention isespecially intended for use in connectionwith insulators and with IWire-clamps which are fastened to the-wire clamps are and fitagainstthe'insulator,sothat no tying is necessary and in such a way thatwhen the adjusted the wires are held in place by their own'tension andare also held view, partly in side elevation and the wires shall be heldrigidly I wires can have a. certain freedom of movedescribed and thenovel and 2 is a plan view, artly in horizontal section,

shown in Fig. 3 with the wire in section.

securely against the insulator. In carrying out this idea I produce inthe sides of the insulators sockets which are opposite but may becontinuous or annular and which are constructed so that the'walls, andespecially the upper Walls,of the sockets engage the clamps and preventtheir displacement. In con sonance with this idea the sockets and theretaining-clamps can be constructed so that or so that the m'entlaterally, if preferred. The arrangement, it will be noticed from thedescription which follows, is such as to permit the Wires to bestretched with great facility and nicety without any tying means exceptthat of the clamps and at the same time the wires are securely. held tothe insulators, which latter may, in a general way, be of any usual orreferred type;

With't iese ends in ,VieW my invention consists of an im roved insulatorand the com-. bination of the insulator and wire-clan1p, whicharrangement will be hereinafter fully features claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters and figures of referenceindicate corresponding parts in all the views.

.Figure 1 is a view, partly in side elevation and partly in verticalsection, of an insulator clamps, showing my improvement. Fig.

of the structure s Fig. 3 is a partly in vertical section, of aninsulator, showing a slightly-modified form of the invention; and Fig. 4is a side elevation of the insulator own in Fig. 1.

' patented Feb. 5, 1907.

The insulator 10 may be of the usual orof any preferred construction,and I have shown an ordinary petticoat type of insulator which isprovided with a wire-groove 11 across the top, this being common toinsulators of this yp 12, and the wire is provided with-clamps 13, whichcan be of any approved kind, but which, as shown, have their inner-endsbeveled, 'so as to fit in the sockets 14 of the insulator, which socketsare placed diametrically opposite and coincident with the ends of thegroove 11, the sockets having their upper walls beveled, as shown at 15,so as to fit snugly and flatly against the corresponding beveled ends ofthe clamps 13. If desired, the insulator 10- can have the usual annulargroove around the top but I have not shown it in Fig. 1, and it willalso be understood that the socket 14 can be annular-that is, canbecarried entirely around the insulator; but I prefer for certainpurposes to use it as shown in Figs. 1 and 2, where the two sockets areplaced diametrically opposite and in line with the groove 1 1. When thisarrangement is used, the wire is stretched through the groove 11, andthe clamps 13 are put in position upon the wire, forced up snugly intothe sockets 14, and fastened. Thus it will be seen the wire is securelyheld in place, and it is also rigidly held, as the ends of fit snugly inthe sockets. r

In Figs. 3 and 4 I have sho'wn a construction which is similar inprinciple to that set out above, but which is intended to provide agreater freedom of action for to permit them to have a greater swayingmovement, and in some places this is desirablei As here shown, theinsulator 10, which, as above stated, can be of any form, has thewiregroove 11 and has alsothe sockl ets on the sides and nearthe top;but, as shown, the sockets are in the form of concave I recesses 16,which are adapted to receive the ends of the-clamps 13*. These clampshave I ball-like end portions and can be otherwise of any approved kind;but as the ends fit closely in the recesses 16 they form,'in effect, andin combination with the insulator, ball joints, I which permit the wires12 to sway freely in any direction, but without straining the insulator.The clamps 15 can be provided with loops 13 on the side,- which.shouldaline with the wire-groove 17 near the top of the insulator, andtie-wires can be passed through the clamps The groove is to receive theline-wire the wires, so as clamps can be correspondingly changed, but

ets 14 or 16 produced so that "ing .anoverhanging upper edge, ofwiretor.

to relieve thestrain from the wires 12 and limit the movement of theclamps 13..

I From the foregoing description it will be readily understood that theform of opposed" sockets on the insulator can be changed in many waysand that the form of the wire-- that the essential thing is to haveopposed sockets or-recesses on the insulator, which will serve tohold'the wire-clamps, and con sequently the wires, in place and whichwill permit the wire to span the top of the insula I-thereforedo notlimit myself to any particular form of socket, insulator, or c amp, utclaim, broadly, the combination of insulator, wire, and clamp which willpermit the arrangement described to be carried 1 out.

In practice it is desirable to have thes'ockthe wire 12' will runstraight through the clamps and through the groove 11 p but obviously.the sockets might be a little lower without affecting the principle ofthe inventionto compensate for sagvof wire'in span; I v

Having thus fully described m invention, 1 claim as new and desire tosecure by Letters Patent* 1. The combination with an insulatorhavstructed to receive a wire, and; having ets on its outer sides, ofclamps constructed clamps-adapted to be secured to a wire and engage theinsulator beneath the said overhang.

' 2. A'structuresuch as described comprising an insulator with a topgroove and with overhanging edges adjacent to the groove ends incombination with wire-clamps to engage a wire and fit beneath theaforesaid overhang.

3.- An insulator having a top grooveand sockets in the outer sides, atthe ends of and in. alin'ement with thegroove.

i 4. The combination, with an insulator having peripheral overhanging orprojecting edges, of ball-like clamps to engage a wire and fit beneaththe said overhang.

5. The combination with an insulator having a' grooved top andball-sockets at the ends of the grooves, and onthe outer sides of theinsulator, of ball-like wire-clamps to en-' gage a wire and fit in theaforesaid sockets.

sockto fit bodily over a wire, and form. abutments to enter theaforesaid sockets.

7. The combination with an insulator having ball-like sockets in itsouter sides, of balllike clamps adapted to fit bodily over a wire andenter the aforesaid sockets.

WALTER G.. CLARK.

Witnesses: 1 W AREEN B. I-iU'ro-nmsoN,

' WILLIS A. BARNES.

The combinationwithan insulator con--

